package com.example.demo.lesson9;



import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

@SpringBootApplication
public class MovieRecommenderSystemApplication {
   public static void main(String[] args) {
      //ApplicationContext负责管理Bean和依赖关系。
      ApplicationContext appContext = SpringApplication.run(MovieRecommenderSystemApplication.class, args);
      //从Application Context中获得Singleton Bean
      ContentBasedFilter filter = appContext.getBean(ContentBasedFilter.class);
      System.out.println("\nContentBasedFilter bean with singleton scope");
      System.out.println(filter);

      //从Singleton Bean中获得Prototype Bean三次
      Movie movie1 = filter.getMovie();
      Movie movie2 = filter.getMovie();
      Movie movie3 = filter.getMovie();
      System.out.println("\nMovie bean with prototype scope");
      System.out.println(movie1);
      System.out.println(movie2);
      System.out.println(movie3);

      //打印各种Bean的实例数
      System.out.println("\nContentBasedFilter instances created: "+
              ContentBasedFilter.getInstances());
      System.out.println("Movie instances created: "+ Movie.getInstances());
   }
   }



